Home / 3,981.45-5,979.10-3,668.51

Finding the Fourth Proportional to 3,981.45, 5,979.10 and 3,668.51

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Solution

The fourth proportional to 3,981.45, 5,979.10 and 3,668.51 is: 5,509.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.45 : 5,979.10 = 3,668.51 : x
  2. Step 2: Convert to fraction form
    3,981.45/5,979.10 = 3,668.51/x
  3. Step 3: Cross multiply
    3,981.45x = 5,979.10 × 3,668.51
  4. Step 4: Simplify right side
    3,981.45x = 21,934,388.14
  5. Step 5: Solve for x
    x = 21,934,388.14/3,981.45
  6. Step 6: Final answer
    x = 5,509.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.